Multifuel burner intrduction:
Multifuel burner is a new combustion device burning gas and coal powder in rotary
kiln. It has a unique structure and reasonable parameters to ensure
gas, coal powder and air, primary air and secondary air mixed
sufficiently. It brings greater thermal intensity, higher
combustion efficiency and easier adjustment. It can be widely
applied to various rotary kilns in metallurgical and chemical
The burner can mix gas and coal powder for co-burning, and also can
realize gas or coal powder separate burning.
The rotary kiln’s combustion system in electricity, chemical,
metallurgy, building materials industries.
Multifuel burner is mainly composed of piping, nozzle, Metal Ripple
Hose compensator, butterfly valves, pressure measurement
instruments and protective layer. Its main structural features are:
There are five layers from outside to inside. They are axial flow
duct, cyclone duct, gas channel, coal air channel and the central
Processed by special material, its outlet are can be modified to
adjust the ejection speed.
It is one of the key components which can maintain the flame shape
and service life time.
3. Metal Ripple Hose Compensator
The Metal Ripple Hose Compensator is the main components of pipe
connecting, sealing and flame shape adjusting.
4. Butterfly Valves
There are butterfly valves at the inlets of axial flow air, cyclone
air and central air. Each air volume and proportion can be adjusted
by change the channel outlet area to modify the ejection speed.
5. Pressure Measurement Instruments
They are used for indirect display air speed of each channel in
6. Protective Layer
It is the refractory casting layer which is cast by user;
1. Flame stable, no fluctuation, no flame sweeping kiln lining and
prolong kiln lining life;
2. Reasonable structure design, well mixed gas and coal powder,
primary air and secondary air, complete combustion, can improve the
kiln thermal strength while reducing the proportion of primary air
to improve the productivity of the kiln and reduce heat
3. The flame round up cover forms bowl effect and initial flame
without strong eddy. It avoids temperature peaks and distributes
the flame temperature rationally. This can effectively protect the
kiln body and guard plate.
4. Due to fully mixing between air and coal powder, the combustion
is more efficiency. It can reduce the content of CO and NOX in
exhaust gas and be beneficial to safety and environmental friendly
5. The nozzle is made of special materials which can resistance
high temperature and easy to replace;
For different type of kiln, fuel characteristics and process
conditions, the multifuel burner is custom designed and fabricated.
Contact: Wendy Liu